ci starts bisection 2024-05-13 03:32:20.888129219 +0000 UTC m=+180470.024383008
bisecting cause commit starting from 75fa778d74b786a1608d55d655d42b480a6fa8bd
building syzkaller on 9026e14289eaf45a00ddddb8730f2092b956d99a
ensuring issue is reproducible on original commit 75fa778d74b786a1608d55d655d42b480a6fa8bd

testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c0935484066fbea2ab6f7c3d01dc7d348bef6fb22566ebb431d4d88a2117082d
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
check whether we can drop unnecessary instrumentation
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: fd7ffb6c70dff1898fbe7a631d93934b571e9afe2a90a316b985709a1b348ce6
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
the bug reproduces without the instrumentation
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
kconfig minimization: base=3976 full=8042 leaves diff=2024
split chunks (needed=false): <2024>
split chunk #0 of len 2024 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3dde05cfa9d1fae6edc9d7e8044102217d5f47ce61d7d47878994d86dac6ca3a
all runs: OK
false negative chance: 0.000
testing without sub-chunk 2/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5ebe336813db50b3e788f3bbb141df4933519c305409358007b4ea2c22e7b107
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9609cff0270f1191c202980c9010001f98c07f0bd838d88dabcf2b79da57d0f9
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 13b409e9f9ee19d5d97675d687899f9424a9f4fc9ffc70a89c281824a8b1ffe4
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 75fa778d74b786a1608d55d655d42b480a6fa8bd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: cb49807aca6b821d662c7a3ca7f48ab124a29420d2f730d599e1ec72ab496612
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
the chunk can be dropped
minimized to 405 configs; suspects: [6LOWPAN 6LOWPAN_GHC_EXT_HDR_DEST 6LOWPAN_GHC_EXT_HDR_FRAG 6LOWPAN_GHC_EXT_HDR_HOP 6LOWPAN_GHC_EXT_HDR_ROUTE 6LOWPAN_GHC_ICMPV6 6LOWPAN_GHC_UDP 6LOWPAN_NHC 6LOWPAN_NHC_DEST 6LOWPAN_NHC_FRAGMENT 6LOWPAN_NHC_HOP 6LOWPAN_NHC_IPV6 6LOWPAN_NHC_MOBILITY 6LOWPAN_NHC_ROUTING 6LOWPAN_NHC_UDP 6PACK 842_COMPRESS 842_DECOMPRESS 9P_FSCACHE 9P_FS_POSIX_ACL 9P_FS_SECURITY ACORN_PARTITION ACORN_PARTITION_ADFS ACORN_PARTITION_CUMANA ACORN_PARTITION_EESOX ACORN_PARTITION_ICS ACORN_PARTITION_POWERTEC ACORN_PARTITION_RISCIX ACPI_NFIT ACPI_NHLT ACPI_PLATFORM_PROFILE ADDRESS_MASKING ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS AR5523 ARCH_CONFIGURES_CPU_MITIGATIONS ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_CPU_PASID ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR AS_VAES AS_VPCLMULQDQ ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AUXILIARY_BUS AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEV_BSGLIB BLK_DEV_INTEGRITY BLK_DEV_INTEGRITY_T10 BLK_DEV_NBD BLK_DEV_NULL_BLK BLK_DEV_NULL_BLK_FAULT_INJECTION BLK_DEV_NVME BLK_DEV_PMEM BLK_DEV_RAM BLK_DEV_RNBD BLK_DEV_RNBD_CLIENT BLK_DEV_THROTTLING BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_WBT BLK_WBT_MQ BONDING BOOT_VESA_SUPPORT BPF_EVENTS BPF_JIT BPF_JIT_ALWAYS_ON BPF_JIT_DEFAULT_ON BPF_LSM BPF_PRELOAD BPF_PRELOAD_UMD BPF_STREAM_PARSER BPF_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY BRIDGE_EBT_BROUTE BRIDGE_EBT_DNAT BRIDGE_EBT_IP BRIDGE_EBT_IP6 BRIDGE_EBT_LIMIT BRIDGE_EBT_LOG BRIDGE_EBT_MARK BRIDGE_EBT_MARK_T BRIDGE_EBT_NFLOG BRIDGE_EBT_PKTTYPE BRIDGE_EBT_REDIRECT BRIDGE_EBT_SNAT BRIDGE_EBT_STP BRIDGE_EBT_T_FILTER BRIDGE_EBT_T_NAT BRIDGE_EBT_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_NF_EBTABLES_LEGACY BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL BTRFS_FS_REF_VERIFY BTT BT_6LOWPAN BT_ATH3K BT_BCM BT_BNEP BT_BNEP_MC_FILTER BT_BNEP_PROTO_FILTER BT_BREDR BT_CMTP BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_POLL_SYNC BT_HCIBTUSB_RTL BT_HCIUART BT_HCIUART_3WIRE BT_HCIUART_AG6XX BT_HCIUART_BCSP BT_HCIUART_H4 BT_HCIUART_LL BT_HCIUART_MRVL BT_HCIUART_QCA BT_HCIUART_SERDEV BT_HCIVHCI BT_HIDP BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL CACHEFILES CAIF CAIF_DEBUG CAIF_DRIVERS CAIF_NETDEV CAIF_TTY CAIF_USB CAIF_VIRTIO CAN CAN_8DEV_USB CAN_BCM CAN_CALC_BITTIMING CAN_DEV CAN_EMS_USB CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_NETLINK CAN_PEAK_USB CAN_RAW CAN_RX_OFFLOAD CAN_SLCAN CAN_VCAN CAN_VXCAN CAPI_TRACE CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CEC_CORE CEPH_FS CEPH_FSCACHE CEPH_FS_POSIX_ACL CEPH_LIB CEPH_LIB_USE_DNS_RESOLVER CFG80211 CFG80211_CRDA_SUPPORT CFG80211_DEBUGFS CFG80211_DEFAULT_PS CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS CFG80211_WEXT CFS_BANDWIDTH CGROUP_BPF CHARGER_BQ24190 CHARGER_ISP1704 CHR_DEV_ST CIFS CIFS_ALLOW_INSECURE_LEGACY CIFS_DEBUG CIFS_DFS_UPCALL CIFS_FSCACHE CIFS_POSIX CIFS_SMB_DIRECT CIFS_SWN_UPCALL CIFS_UPCALL CIFS_XATTR CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MBYTES CMDLINE_PARTITION COMEDI COMEDI_DT9812 COMEDI_NI_USB6501 COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC4 CRC64 CRC64_ROCKSOFT CRC7 CRC8 CRC_ITU_T CRC_T10DIF CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32 CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRC64_ROCKSOFT CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL CRYPTO_CRYPTD CRYPTO_CTS CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECC CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_KDF800108_CTR CRYPTO_KEYWRAP CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_LIB_AESCFB CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LRW CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305 CRYPTO_POLY1305_X86_64 CRYPTO_POLYVAL CRYPTO_POLYVAL_CLMUL_NI CRYPTO_RMD160 CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SHA1_SSSE3 CRYPTO_SHA256_SSSE3 CRYPTO_SHA512_SSSE3 CRYPTO_SIG CRYPTO_SIMD CRYPTO_SM2 CRYPTO_SM3 CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 CRYPTO_SM4_GENERIC CRYPTO_STREEBOG CRYPTO_TEA CRYPTO_TWOFISH CRYPTO_TWOFISH_AVX_X86_64 CRYPTO_TWOFISH_COMMON CRYPTO_TWOFISH_X86_64 CRYPTO_TWOFISH_X86_64_3WAY CRYPTO_USER CRYPTO_USER_API CRYPTO_USER_API_AEAD CRYPTO_USER_API_ENABLE_OBSOLETE CRYPTO_USER_API_HASH CRYPTO_USER_API_RNG CRYPTO_USER_API_SKCIPHER CRYPTO_VMAC CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_PFIFO_FAST DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DMA_NEED_SYNC DM_AUDIT DM_BIO_PRISON DM_BUFIO DM_CACHE DM_CACHE_SMQ DM_CLONE DM_CRYPT DM_FLAKEY DM_INTEGRITY DM_MULTIPATH DM_MULTIPATH_QL DM_MULTIPATH_ST DM_PERSISTENT_DATA DM_RAID DM_SNAPSHOT DM_THIN_PROVISIONING DM_UEVENT DM_VERITY DM_VERITY_FEC DM_WRITECACHE ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GPIOLIB HAMRADIO IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MMC MTD NET_CLS_U32 NET_SCH_DEFAULT PARTITION_ADVANCED RFKILL SERIAL_DEV_BUS TLS TLS_DEVICE TRANSPARENT_HUGEPAGE TRUSTED_KEYS USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ATH X86_X32_ABI ZONE_DEVICE]
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed
picked [v6.8 v6.7 v6.6 v6.4 v6.2 v6.0 v5.18 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 31 release tags
testing release v6.8
testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7631f5b952a994251ac08c400500c4664289864c78a1b572f407ff961861645a
all runs: OK
false negative chance: 0.000
# git bisect start 75fa778d74b786a1608d55d655d42b480a6fa8bd e8f897f4afef0031fe618a8e94127a0934896aba
Bisecting: 14009 revisions left to test after this (roughly 14 steps)
[4f72ed492d7798919269a20d157d34495a988935] Merge tag 'io_uring-6.9-20240405' of git://git.kernel.dk/linux

testing commit 4f72ed492d7798919269a20d157d34495a988935 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 180d8a4ccd7fd1c64e80e9ee242f60707b102433ec830c3c7966532831606134
all runs: OK
false negative chance: 0.000
# git bisect good 4f72ed492d7798919269a20d157d34495a988935
Bisecting: 7812 revisions left to test after this (roughly 13 steps)
[880ec7eaae4ec26633174f4ee3f520ec67c9cbe4] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git

testing commit 880ec7eaae4ec26633174f4ee3f520ec67c9cbe4 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8e856deae61ceef2e8a3e67d576cdaa3a845eaa17e6c4964ab4a9a2239447dcf
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
# git bisect bad 880ec7eaae4ec26633174f4ee3f520ec67c9cbe4
Bisecting: 2649 revisions left to test after this (roughly 12 steps)
[e05196f9f228a6c9556080bc8919e762eaffe95b] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git

testing commit e05196f9f228a6c9556080bc8919e762eaffe95b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 241438c2ca87ef7324c691bc27d9f64c263d63078303df0c886b5f0a4258ba05
all runs: OK
false negative chance: 0.000
# git bisect good e05196f9f228a6c9556080bc8919e762eaffe95b
Bisecting: 1300 revisions left to test after this (roughly 10 steps)
[8be82e3b0dc232561067d97dd1f9a603f23d77ec] Merge branch 'for-next' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git

testing commit 8be82e3b0dc232561067d97dd1f9a603f23d77ec gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bfa48f6f0906ef3c17383d3a78aad166ab7468806bd13474c43bf6849aa15b81
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
# git bisect bad 8be82e3b0dc232561067d97dd1f9a603f23d77ec
Bisecting: 744 revisions left to test after this (roughly 9 steps)
[b1cacc5da3ac37d71768baf5476f3f1204ddcc0e] Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux.git

testing commit b1cacc5da3ac37d71768baf5476f3f1204ddcc0e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 07c8cdeecf3ea3a6fed117e5535792a2c04e5cdc524314ea60b44a5f19eeb5f6
all runs: OK
false negative chance: 0.000
# git bisect good b1cacc5da3ac37d71768baf5476f3f1204ddcc0e
Bisecting: 360 revisions left to test after this (roughly 9 steps)
[46125dbc486c4554eeebed1d168287fdf314af8c] Merge branch 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git

testing commit 46125dbc486c4554eeebed1d168287fdf314af8c gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e3c100cf8a1b4d0f5ab6b7de632c5908c62c92256d56cd64736ec7568ff17588
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
# git bisect bad 46125dbc486c4554eeebed1d168287fdf314af8c
Bisecting: 225 revisions left to test after this (roughly 8 steps)
[79bb3f6c56b76024c0071bda7d958e089ab0d114] Merge branch 'for-next' of git://git.kernel.org/pub/scm/fs/fscrypt/linux.git

testing commit 79bb3f6c56b76024c0071bda7d958e089ab0d114 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 91e8f3767e9a87b3e96a41bb1078f1a11f76ece5f081585f96ec485588cd5122
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
# git bisect bad 79bb3f6c56b76024c0071bda7d958e089ab0d114
Bisecting: 78 revisions left to test after this (roughly 6 steps)
[83c38e3ef8214cb5b80c113ac39e855548f79a44] bcachefs: check inode backpointer in bch2_lookup()

testing commit 83c38e3ef8214cb5b80c113ac39e855548f79a44 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 347ca71cd84dc3ebd55a5d3389cf31de130163c5be9b50ce3395ebecb67719e3
all runs: OK
false negative chance: 0.000
# git bisect good 83c38e3ef8214cb5b80c113ac39e855548f79a44
Bisecting: 39 revisions left to test after this (roughly 5 steps)
[3793b3f91f88269ff8ad8ed2b95c6779415e7fd5] bcachefs: bch2_extent_merge() -> bch2_dev_rcu()

testing commit 3793b3f91f88269ff8ad8ed2b95c6779415e7fd5 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ad6f7ae6788c8e6a419ab1cc16f905bbc328141b61c5bc201d335cfa1ae2a37d
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc, types: [UNKNOWN]
# git bisect bad 3793b3f91f88269ff8ad8ed2b95c6779415e7fd5
Bisecting: 19 revisions left to test after this (roughly 4 steps)
[f295298b8c6413f0ed2a5a69dd7f32409cc54f1d] bcachefs: New helpers for device refcounts

testing commit f295298b8c6413f0ed2a5a69dd7f32409cc54f1d gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 769365a285595662910432502f7b9ac46c5c0782a11752936824af43210b7c78
all runs: OK
false negative chance: 0.000
# git bisect good f295298b8c6413f0ed2a5a69dd7f32409cc54f1d
Bisecting: 9 revisions left to test after this (roughly 3 steps)
[9b3059a1b3e9a71e345edf52f8487fc881d9f414] bcachefs: bch2_check_alloc_key() -> bch2_dev_tryget_noerror()

testing commit 9b3059a1b3e9a71e345edf52f8487fc881d9f414 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1c5ef888413a3c0e40d8d1a1d136e51bcd01aef93c51f427080f0ec562bba26f
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN]
# git bisect bad 9b3059a1b3e9a71e345edf52f8487fc881d9f414
Bisecting: 4 revisions left to test after this (roughly 2 steps)
[13a16dabde3394350a877a6a11a90887ca899668] bcachefs: bch2_dev_btree_bitmap_marked() -> bch2_dev_rcu()

testing commit 13a16dabde3394350a877a6a11a90887ca899668 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 471ad256b2bd73fb03847803b36c390e6c67de8ae3124b7c8120cd24431a5269
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN]
# git bisect bad 13a16dabde3394350a877a6a11a90887ca899668
Bisecting: 2 revisions left to test after this (roughly 1 step)
[23f308ae19d345c8fc022edc5aae9a0af172ad73] bcachefs: bch2_dev_safe() -> bch2_dev_rcu()

testing commit 23f308ae19d345c8fc022edc5aae9a0af172ad73 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9a39e76020dcca5107fc86cd2bce6e30e55ed1aea86c26182d351b05e9bfaf87
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN]
# git bisect bad 23f308ae19d345c8fc022edc5aae9a0af172ad73
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[552aa5486579c18b4f8e7ca03ef88fa573c517b5] bcachefs: Debug asserts for ca->ref

testing commit 552aa5486579c18b4f8e7ca03ef88fa573c517b5 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bfc74823a37cc1d4f80937024fb5a7e8e410a4d92201bc70577af373b6965efb
all runs: crashed: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev
representative crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev, types: [UNKNOWN]
# git bisect bad 552aa5486579c18b4f8e7ca03ef88fa573c517b5
552aa5486579c18b4f8e7ca03ef88fa573c517b5 is the first bad commit
commit 552aa5486579c18b4f8e7ca03ef88fa573c517b5
Author: Kent Overstreet <kent.overstreet@linux.dev>
Date:   Fri May 3 18:07:40 2024 -0400

    bcachefs: Debug asserts for ca->ref
    
    Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

 fs/bcachefs/bcachefs.h   |  6 ++++++
 fs/bcachefs/sb-members.h | 13 +++++++++++++
 fs/bcachefs/super.c      | 21 ++++++++++++++++++---
 3 files changed, 37 insertions(+), 3 deletions(-)

accumulated error probability: 0.00
culprit signature: bfc74823a37cc1d4f80937024fb5a7e8e410a4d92201bc70577af373b6965efb
parent  signature: 769365a285595662910432502f7b9ac46c5c0782a11752936824af43210b7c78
revisions tested: 22, total time: 6h38m31.660469577s (build: 4h21m17.868666475s, test: 2h0m4.240685274s)
first bad commit: 552aa5486579c18b4f8e7ca03ef88fa573c517b5 bcachefs: Debug asserts for ca->ref
recipients (to): ["kent.overstreet@linux.dev" "kent.overstreet@linux.dev" "linux-bcachefs@vger.kernel.org"]
recipients (cc): ["bfoster@redhat.com" "linux-kernel@vger.kernel.org"]
crash: kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev
bcachefs (loop0): mounting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,nojournal_transaction_names
bcachefs (loop0): recovering from clean shutdown, journal seq 8
bcachefs (loop0): alloc_read... done
bcachefs (loop0): stripes_read... done
bcachefs (loop0): snapshots_read... done
bucket 0:4 gen 0 different types of data in same bucket: btree, sb
while marking sb, shutting down
bcachefs (loop0): inconsistency detected - emergency read only at journal seq 8
bcachefs (loop0): bch2_trans_mark_dev_sb(): error EIO
Kernel panic - not syncing: bch_dev->ref underflow, last put: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
Kernel panic - not syncing: bch_dev->ref underflow, last put: rcu_read_lock include/linux/rcupdate.h:781 [inline]
Kernel panic - not syncing: bch_dev->ref underflow, last put: bch2_get_next_dev+0x19/0xf0 fs/bcachefs/sb-members.h:139
Kernel Offset: disabled
Rebooting in 86400 seconds..